Valve for internal-combustion engines.



E. W. BOWEN.

VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV.25, 1011.

1,040,612., Patented Oct. 8, 1912.

Inventor Witnesses- 5 00 by v J1 ttarney.

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VALVE INlllllltNAL-(30.tttll3lflililION ENGINES.

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Implication tiled November 1911.

Specification of Letters Patent.

Patented Oct. 8,1912. serial No. 662,371.

To all whom it may concern Be it known thatel, Enucs'r Wmoaon BOWEN, consulting engineer, a subject of the King of Great Britain and Ireland, residing at lAlbemarle street, London, Vii, England, have invented certain new and useful Improvements in Valves for Internal- Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines and has for its object to provide simple means for the admission of the explosive mixture to the cylinder and the control of the exhaust therefrom,

According to the invention i. provide a reciprocating sleeve valve which is carried within a removable cylinder head inclosing: the end of the wall of the cylinder and rc ciprooates upon bearing surfaces formed rt speetively upon the exterior of the cnd ot' the cylinder Wall and in the cylinder head so as to bridge the space between the said surfaces, through which space the minussion to and exhaust from the cylinder are effected. The valve is provided with separate admission and exhaust ports and is operated from the crank shaft.

According to the invention also means a re provided for the eilcrtivc lubricalimi of the sleeve valve. I

The invention is illustrated by way of c:\:- ample in the accoinpanyiiur drawings in which the figure represents in cross seetion a cylinder of a revolving" cylinder on nine.

According to the particular construction shown in the drawing an outwardly pro-- jecting' flange 0 is provided at a rhitermiued distance from the extremity of the wall 0 of the cylinder upon which flange the cylinder head Z) is mounted and the extremity of the wall of the cylinder is thickened at the exterior to form a seating for pui'rltingr rings and a contact 't'uce for the interior of the sleeve valve (1. The head 3) cou'iprises a hollow cylindrical. fitting of substantially greater diameter than the cylinder :ulapted to be secured upon the flange referred to so as to inclose the extremity of the cylinder wall. The cylindrical. fitting; is provided with a partition I) which serves to divide the space within the cylinder head around the cylinder wall into two rironin'tierent ial belts Z1 ffi, the partition heingr so disposed and arrahged that the. said halts can both communicate with the interior of the cylinder and that the inner edge of the partition serves as a bearing face for the exterior of the sleeve valve a. At the outer end of the cylinder head thereis provided an annular recess 6 which serves to receive and guide the outer extremity of the sleeve valve and which is advantageously packed on the innor side of the valve.

The valve (1. consists of a cylindrical member provided with two ports or series of ports a, a adapted to register res ectively with the admission and exhaust be ts b b and to put them into communication with the interior of the cylinder when necessary. The valve is advantageousl reciprocated by means of a rod (1 securec to :1 lug provided upon its exterior surface, which rod passes through a stuffing box (Z mounted in the cylinder flange and receives movement from cams, eccentrics or other suitable means driven by chain gear, spur gear or other suitable transmission devices from the crank shaft.

In the application of the valve according to the invention to an internal-combustion engine of the fixed cylinder type, the admission and exhaust belts may be conveniently disposed at one side only or on opposite sides oi. the cylinder and thus would not necessitab any increase in the overall dimensions of the engine.

The enlarged portion of the wall of the cylinder at upon which the valve reciprocates is prctorablyso formed that the inner end of the valve at all points in its travel projects always beyond the inner end of the said enlarged portion of the cylinder wall, and there is, therefore, an annular space 0 into which the oil carried into the valve cluunbcr tends to pass and so keep the contacting surface of the sleeve valve and cylinder wall constantly lubricated. I This tcndcruzy is assisted by ccntrihigal force in the case o'llcngines with revolving cylinders.

it will be understood that valves according: to the invention may be applied with advantage to all types of intcrnal-comlnistiou engines.

l l'hat l claim as my invention and desire to secure oy Letters Patent is l. The combination with an open-eruledv cylinder oi? an internal combustion engine, ot a mnovablc cylinder head inclosin the open end of the cylinder and having a mission and lT-illu lst ports, such ports communicating with the cylinder, a partition in said removable cylinder head clividing to foam an admission belt and an exhaust belt and means. for controlling said ports, said.

means being inelosed Within the removable cylinder head and operating around the open cylinder end.

2. The combination with an open-ended oylinderof an internal combustion engine, of a i emovable cylinder head inclosing the openend of the cylinder and having ellmi ssionemi exhaustports, such ports (zommuniceizing with the cylinder, a, partition in mid removable'cylinder. head dividing it to form an admission belt {1111i an exhaust he a sleeve valve inclosed within the remov cylinder head and encircling the open of the cylinder, said sleeve valve cont the admission and exhaust ports encl n Y for operating said Valve. 

